An airstrip is seen through the cockpit of a Dornier aircraft as it approaches to land at Tenzing Hillary Airport, which has a reputation as the world's most dangerous airport in Lukla, approximately 9186 feet above sea level in Solukhumbu district April 25, 2014. REUTERS/Navesh Chitrakar

Thursday, June 05, 2014

An airstrip is seen through the cockpit of a Dornier aircraft as it approaches to land at Tenzing Hillary Airport, which has a reputation as the world's most dangerous airport in Lukla, approximately 9186 feet above sea level in Solukhumbu district April 25, 2014. REUTERS/Navesh Chitrakar

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Thursday, June 05, 2014

An aircraft is reflected in a mirror at a hotel as it takes off from Tenzing Hillary Airport, which has a reputation as the world's most dangerous airport in Lukla, approximately 9186 feet above sea level in Solukhumbu district April 25, 2014. REUTERS/Navesh Chitrakar

Thursday, June 05, 2014

An aircraft is reflected in a mirror at a hotel as it takes off from Tenzing Hillary Airport, which has a reputation as the world's most dangerous airport in Lukla, approximately 9186 feet above sea level in Solukhumbu district April 25, 2014. REUTERS/Navesh Chitrakar

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Thursday, June 05, 2014

A novice monk walks past the Kyamgon Tashi Chocling Monastery at Lukla, in Solukhumbu district April 25, 2014. REUTERS/Navesh Chitrakar

Thursday, June 05, 2014

A novice monk walks past the Kyamgon Tashi Chocling Monastery at Lukla, in Solukhumbu district April 25, 2014. REUTERS/Navesh Chitrakar

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Thursday, June 05, 2014

Lights illuminate a street in the evening in Namche, approximately 11286 feet above sea level in Solukhumbu District April 27, 2014. REUTERS/Navesh Chitrakar

Thursday, June 05, 2014

Lights illuminate a street in the evening in Namche, approximately 11286 feet above sea level in Solukhumbu District April 27, 2014. REUTERS/Navesh Chitrakar

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Thursday, June 05, 2014

American climber Alex Goldfarb, who had to cancel his planned climb of Mount Lhotse, reads a book in Solukhumbu District May 5, 2014. REUTERS/Navesh Chitrakar

Thursday, June 05, 2014

American climber Alex Goldfarb, who had to cancel his planned climb of Mount Lhotse, reads a book in Solukhumbu District May 5, 2014. REUTERS/Navesh Chitrakar

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Thursday, June 05, 2014

A yak walks past a clothing store in Namche, approximately 11155 feet above sea level in Solukhumbu District April 27, 2014. REUTERS/Navesh Chitrakar

Thursday, June 05, 2014

A yak walks past a clothing store in Namche, approximately 11155 feet above sea level in Solukhumbu District April 27, 2014. REUTERS/Navesh Chitrakar

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Thursday, June 05, 2014

Khunjung Sherpa, 90, who earned 0.09 USD a day when he worked as a porter, sits outside his house in Namche, Solukhumbu District April 27, 2014. REUTERS/Navesh Chitrakar

Thursday, June 05, 2014

Khunjung Sherpa, 90, who earned 0.09 USD a day when he worked as a porter, sits outside his house in Namche, Solukhumbu District April 27, 2014. REUTERS/Navesh Chitrakar

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Thursday, June 05, 2014

Porter and climber Tenzing Bhotay Sherpa, 31, looks through the window of a lodge after arriving from Everest base camp, in Phunki Tenga in Solukhumbu District April 30, 2014. REUTERS/Navesh Chitrakar

Thursday, June 05, 2014

Porter and climber Tenzing Bhotay Sherpa, 31, looks through the window of a lodge after arriving from Everest base camp, in Phunki Tenga in Solukhumbu District April 30, 2014. REUTERS/Navesh Chitrakar

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Thursday, June 05, 2014

A porter crosses a bridge while on his way back from Namche, approximately 11155 feet above sea level in Solukhumbu District April 26, 2014. REUTERS/Navesh Chitrakar

Thursday, June 05, 2014

A porter crosses a bridge while on his way back from Namche, approximately 11155 feet above sea level in Solukhumbu District April 26, 2014. REUTERS/Navesh Chitrakar

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Thursday, June 05, 2014

Porter Lakpa Sherpa, 42, walks along the tracks while on his way to Everest base camp in Solukhumbu District April 26, 2014. REUTERS/Navesh Chitrakar

Thursday, June 05, 2014

Porter Lakpa Sherpa, 42, walks along the tracks while on his way to Everest base camp in Solukhumbu District April 26, 2014. REUTERS/Navesh Chitrakar

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Thursday, June 05, 2014

Mount Ama Dablam, which stands approximately 22310 feet above sea level, is seen behind Khumjung Village in Solukhumbu District April 30, 2014. REUTERS/Navesh Chitrakar

Thursday, June 05, 2014

Mount Ama Dablam, which stands approximately 22310 feet above sea level, is seen behind Khumjung Village in Solukhumbu District April 30, 2014. REUTERS/Navesh Chitrakar

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Thursday, June 05, 2014

Temba Sherpa, 45, who has reached the summit of Everest seven times, climbs to clean the mani (prayer) stone in Khumjung, approximately 12139 feet above sea level in Solukhumbu District May 8, 2014. REUTERS/Navesh Chitrakar

Thursday, June 05, 2014

Temba Sherpa, 45, who has reached the summit of Everest seven times, climbs to clean the mani (prayer) stone in Khumjung, approximately 12139 feet above sea level in Solukhumbu District May 8, 2014. REUTERS/Navesh Chitrakar

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Thursday, June 05, 2014

A statue of Sir Edmund Hillary, one of the first climbers to reach the summit of Mount Everest and the founder of Khumjung High School, is seen in the school grounds in Khumjung, approximately 12139 feet above sea level in Solukhumbu District May 8, 2014. REUTERS/Navesh Chitrakar

Thursday, June 05, 2014

A statue of Sir Edmund Hillary, one of the first climbers to reach the summit of Mount Everest and the founder of Khumjung High School, is seen in the school grounds in Khumjung, approximately 12139 feet above sea level in Solukhumbu District May 8, 2014. REUTERS/Navesh Chitrakar

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Thursday, June 05, 2014

Dr. Sagar Panthin sits inside the Kunde Hospital, founded in 1966 by Sir Edmund Hillary, one of the first climbers to reach the summit of Mount Everest, in Khumjung, Solukhumbu District April 30, 2014. REUTERS/Navesh Chitrakar

Thursday, June 05, 2014

Dr. Sagar Panthin sits inside the Kunde Hospital, founded in 1966 by Sir Edmund Hillary, one of the first climbers to reach the summit of Mount Everest, in Khumjung, Solukhumbu District April 30, 2014. REUTERS/Navesh Chitrakar

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Thursday, June 05, 2014

Nima Doma Sherpa, 25, whose husband Lakpa Sherpa, 26, died in the avalanche on April 18 2014, holds her daughter Pasang Choti Sherpa as she poses for a photograph with her father-in-law Tenzing Sherpa, 56, and mother-in-law Chamchi Phuti Sherpa, 55, inside their house in Khumjung in Solukhumbu District May 8, 2014. REUTERS/Navesh Chitrakar

Thursday, June 05, 2014

Nima Doma Sherpa, 25, whose husband Lakpa Sherpa, 26, died in the avalanche on April 18 2014, holds her daughter Pasang Choti Sherpa as she poses for a photograph with her father-in-law Tenzing Sherpa, 56, and mother-in-law Chamchi Phuti Sherpa, 55, inside their house in Khumjung in Solukhumbu District May 8, 2014. REUTERS/Navesh Chitrakar

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Thursday, June 05, 2014

Nang Tashi Sherpa, 64, a witch doctor, sits inside his house in Khumjung, Solukhumbu District April 30, 2014. REUTERS/Navesh Chitrakar

Thursday, June 05, 2014

Nang Tashi Sherpa, 64, a witch doctor, sits inside his house in Khumjung, Solukhumbu District April 30, 2014. REUTERS/Navesh Chitrakar

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Thursday, June 05, 2014

Water is boiled using solar power in Khumjung, in Solukhumbu District April 30, 2014. REUTERS/Navesh Chitrakar

Thursday, June 05, 2014

Water is boiled using solar power in Khumjung, in Solukhumbu District April 30, 2014. REUTERS/Navesh Chitrakar

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Thursday, June 05, 2014

Mount Everest, which is 29035 feet high, is seen through the window of a monastery in Tengboche, Solukhumbu District May 2, 2014. REUTERS/Navesh Chitrakar

Thursday, June 05, 2014

Mount Everest, which is 29035 feet high, is seen through the window of a monastery in Tengboche, Solukhumbu District May 2, 2014. REUTERS/Navesh Chitrakar

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Thursday, June 05, 2014

A porter rests inside a porterhouse in Tengboche, approximately 12467 feet above sea level, in Solukhumbu District May 1, 2014. REUTERS/Navesh Chitrakar

Thursday, June 05, 2014

A porter rests inside a porterhouse in Tengboche, approximately 12467 feet above sea level, in Solukhumbu District May 1, 2014. REUTERS/Navesh Chitrakar

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Thursday, June 05, 2014

Shoes are left out to dry after being washed, in Solukhumbu District April 26, 2014. REUTERS/Navesh Chitrakar

Thursday, June 05, 2014

Shoes are left out to dry after being washed, in Solukhumbu District April 26, 2014. REUTERS/Navesh Chitrakar

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Thursday, June 05, 2014

Trekkers have their oxygen level checked at the Himalayan Rescue Association Nepal post in Pheriche, approximately 14107 feet above sea level, in Solukhumbu District May 3, 2014. REUTERS/Navesh Chitrakar

Thursday, June 05, 2014

Trekkers have their oxygen level checked at the Himalayan Rescue Association Nepal post in Pheriche, approximately 14107 feet above sea level, in Solukhumbu District May 3, 2014. REUTERS/Navesh Chitrakar

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Thursday, June 05, 2014

A Nepalese army personnel sits inside a check post as he waits to check permits for trekkers passing by, in Solukhumbu District April 26, 2014. REUTERS/Navesh Chitrakar

Thursday, June 05, 2014

A Nepalese army personnel sits inside a check post as he waits to check permits for trekkers passing by, in Solukhumbu District April 26, 2014. REUTERS/Navesh Chitrakar